I am trying to compile the files after generating from these steps:-
(1) wsdl2h -o calc.h http://www.genivia.com/calc.wsdl
(2) soapcpp2 -j -CL calc.h
(3) Creating a main.cpp with the following code:-
#include "calc.nsmap" // XML namespace mapping table (only needed once at the global level)
#include "soapcalcProxy.h" // the proxy class, also #includes "soapH.h" and "soapStub.h"
int main()
{
calcProxy calc;
double sum;
if (calc.add(1.23, 4.56, sum) == SOAP_OK)
std::cout << "Sum = " << sum << std::endl;
else
calc.soap_stream_fault(std::cerr);
calc.destroy(); // same as: soap_destroy(calc.soap); soap_end(calc.soap);
}
After it I compile issuing the command:-
g++ -o calcclient main.cpp soapcalcProxy.cpp soapC.cpp -lgsoap++
I get the following errors:-
/tmp/ccA5Ergj.o: In function `soap_ignore_element(soap*)':
soapC.cpp:(.text+0x112d): undefined reference to `soap_ignore'
/tmp/ccA5Ergj.o: In function `soap_putelement':
soapC.cpp:(.text+0x149b): undefined reference to `soap_element_empty'
collect2: error: ld returned 1 exit status
Please help in compiling.
I solved this. I was thinking the lib is in /usr/lib but it was in /usr/local/lib. I included -L/usr/local/lib while compiling, and it worked.
Related
I used CMake to compile a static version of (a fairly recent of) z3 using:
cmake -DBUILD_LIBZ3_SHARED=false -DCMAKE_INSTALL_PREFIX=/opt/z3-devel -G "Unix Makefiles" ../
Now when I statically link the library against a C++ program, say this small variation of a z3 example:
#include"z3++.h"
using namespace z3;
int main(int argc, char** argv) {
config conf;
context c(conf);
expr x = c.int_const("x");
expr y = c.int_const("y");
expr z = c.int_const("z");
goal g(c);
g.add( ((2*x)+y)+z == 4);
g.add( (x+(2*y))+z == 4);
g.add( x+y == 4);
std::cout << g << "\n";
tactic t(c, "fm");
apply_result r = t(g);
std::cout << r << "\n";
return 0;
}
via
g++ -c -I /opt/z3-devel/include -static -o main.o main.cc
g++ -static -L /opt/z3-devel/lib64 -o main main.o -lz3
I receive a long list of undefined reference linking errors. What solves the issue is to add -lgomp -pthread -lrt -ldl as additional libraries. The linker outputs the following warning:
/usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/8/libgomp.a(target.o): in function `gomp_target_init':
(.text+0x32c): warning: Using 'dlopen' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
Nevertheless, the program runs fine on my own machine and on Starexec.
Is this combination of static and dynamic linking the best I can do? Shouldn't those libraries be already statically linked into libz3.a? I have static versions of gomp, pthread and rt available on the system.
ESP8266 NONOS SDK: How to compile C++ code?
I'm somehow not able to compile C++ code using the ESP8266 NONOS SDK.
I use the gen_misc.sh-script to configure and compile the program,
but it outputs the following error:
start...
make[1]: Entering directory '/repos/esp/ESP8266_NONOS_SDK/diplomarbeit-firmware/user'
xtensa-lx106-elf-g++ -Os -g -Wpointer-arith -Wundef -Werror -Wl,-EL -fno-inline-functions -nostdlib -mlongcalls -mtext-section-literals -ffunction-sections -fdata-sections -fno-builtin-printf -DICACHE_FLASH -DSPI_FLASH_SIZE_MAP=3 -I include -I ./ -I ../../include/ets -I ../include -I ../../include -I ../../include/eagle -I ../../driver_lib/include -o .output/eagle/debug/obj/user_main.o -c user_main.cpp
xtensa-lx106-elf-ar ru .output/eagle/debug/lib/libuser.a .output/eagle/debug/obj/user_main.o
make[1]: Leaving directory '/repos/esp/ESP8266_NONOS_SDK/diplomarbeit-firmware/user'
xtensa-lx106-elf-gcc -L../lib -nostdlib -T../ld/eagle.app.v6.ld -Wl,--no-check-sections -Wl,--gc-sections -u call_user_start -Wl,-static -Wl,--start-group -lc -lgcc -lhal -lphy -lpp-lnet80211 -llwip -lwpa -lcrypto -lmain -ldriver user/.output/eagle/debug/lib/libuser.a -Wl,--end-group -o .output/eagle/debug/image/eagle.app.v6.out
../lib/libmain.a(app_main.o): In function `user_uart_wait_tx_fifo_empty':
(.irom0.text+0x6a0): undefined reference to `user_pre_init'
../lib/libmain.a(app_main.o): In function `user_uart_wait_tx_fifo_empty':
(.irom0.text+0x6b8): undefined reference to `user_init'
../lib/libmain.a(app_main.o): In function `flash_data_check':
(.irom0.text+0x718): undefined reference to `user_pre_init'
../lib/libmain.a(app_main.o): In function `flash_data_check':
(.irom0.text+0xac1): undefined reference to `user_init'
collect2: error: ld returned 1 exit status
../Makefile:398: recipe for target '.output/eagle/debug/image/eagle.app.v6.out' failed
make: *** [.output/eagle/debug/image/eagle.app.v6.out] Error 1
My code looks like that:
user_main.cpp
#include "user_interface.h"
#include "osapi.h"
#include "partition.h"
void ICACHE_FLASH_ATTR user_pre_init ()
{
// register partition table here
if (!system_partition_table_regist(partition_table,
sizeof(partition_table) / sizeof(partition_table[0]),
SPI_FLASH_SIZE_MAP))
{
os_printf("FAIL TO REGISTER PARTITION TABLE");
while (1) {}
}
}
class MyClass {
};
void user_init ()
{
os_printf("Hello world!\n");
}
I really don't know how to fix this problem.
The header files you are including are C header files, not C++. The C++ compiler will mangle the function names, leading to the above error you see. You need to wrap them in an extern block like this to tell the compiler not to mangle them:
extern "C" {
#include "user_interface.h"
#include "osapi.h"
#include "partition.h"
}
I'm trying to read in data from pcap files using pcap_open_offline(). I've used #include <pcap/pcap.h> and compiled with no errors after some debugging. Now I've come across another problem I can't seem to figure out. I wrote the following function:
void openPcap(char* filename){
printf("Opening file %s\n", filename);
pcap_t *pcap;
const unsigned char *packet;
char errbuf[PCAP_ERRBUF_SIZE];
struct pcap_pkthdr header;
pcap = pcap_open_offline(filename, errbuf);
if (pcap == NULL){
fprintf(stderr, "%s Malformed packet records in file %s",ER,filename);
}
}
And my pcap_open_offline call gives me about 100 of these errors when I try to compile:
pcap-linux.c:(.text+0xcd4): undefined reference to 'nl_handle_alloc'
pcap-linux.c:(.text+0xce8): undefined reference to 'genl_connect'
pcap-linux.c:(.text+0xcf6): undefined reference to 'genl_ctrl_alloc_cache'
pcap-linux.c:(.text+0xd0e): undefined reference to 'genl_ctrl_search_by_name'
pcap-linux.c:(.text+0xd64): undefined reference to 'nl_handle_destroy'
pcap-linux.c:(.text+0xdd7): undefined reference to 'nl_cache_free'
This is what my makefile looks like:
# -------------------------------
C=/afs/nd.edu/user14/csesoft/new/bin/gcc
CFLAGS=-Wall -std=c11 -I/afs/nd.edu/coursesp.18/cse/cse30341.01/support/gcc-libpcap/include -D_BSD_SOURCE
LD=/afs/nd.edu/user14/csesoft/new/bin/g++
#LD=g++
LDFLAGS=-lpthread
# # ----------------------------
LDFLAGS += -L/afs/nd.edu/coursesp.18/cse/cse30341.01/support/gcc-libpcap/lib -lpcap # Add your own flags here, or leave blank
threadedRE: threadedRE.o
$(LD) $^ $(LDFLAGS) -o $#
threadedRE.o: threadedRE.c
$(C) $(CFLAGS) -c $<
# C compiler
%.o: %.c
$(C) $(CFLAGS) -c $<
.PHONY: clean
clean:
rm -f threadedRE *.o
And my headers are:
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <getopt.h>
#include <string.h>
#include <sys/stat.h>
#include <pcap/pcap.h>
Any suggestions would be greatly appreciated.
It isn't a compiling error, but a linking one. At the end of build process you should see something like "ld exited with error".
pcap_open_offline() seems to use nl_handle_alloc() and other functions, but linker can't find object files containing their implementation. Pointing linker to proper library which contains required object files by adding -lnl to LDFLAGS should do the trick.
So I have a child.c file and I want to compile and run it in my main.c file using the system() function of stdlib.h.
child.c:
#include<stdio.h>
int main(){
printf("I am the child\n");
return 0;
}
main.c:
#include <stdio.h>
#include <stdlib.h>
int main() {
system("cd ~/Desktop/HW3/HW3");
system("gcc -o child child.c");
system("./child");
return 0;
}
everything worked fine when I compile and run main.c in terminal using the following command
abcs-mbp:HW3 abc$ cd
abcs-mbp:~ abc$ cd ~/Desktop/HW3/HW3
abcs-mbp:HW3 abc$ gcc -o main main.c
abcs-mbp:HW3 abc$ ./main
and it ran child.c and printed the following:
I am the child
but when I tried to run the exact same main.c in XCode, XCode gave me the following error:
clang: error: no such file or directory: 'child.c'
clang: error: no input files
sh: ./child: No such file or directory
anybody know why this is happening? I think it has something to do with path, but how can I tell XCode the path of child.c and then tell it to compile child.c?
I also tried
system("cd ~/Desktop/HW3/HW3");
system("gcc -o child child.c");
system("./child");
and
system("/Users/vqianxiao/Desktop/HW3/HW3/ gcc -o child child.c");
but nothing seems to work... any help is appreciated!
the reason that it does not work is a combination of things
1) each 'system' call is run in a separate shell instance,
so the second 'system' call
starts from the directory where the main program is running.
2) things do down from there
a suggested fix:
system("cd ~/Desktop/HW3/HW3; && gcc -o child child.c; && ./child;");
notice, all one system call, terminators at end of commands, and linked by && so one command must be successful to continue on to the next command
Is it possible to compile C "Hello world" program to have final executable entirely static?
#include <stdio.h>
int main() {
printf("hello world!\n");
return 0;
}
I've tried the following:
clang -static main.c
But it gives:
ld: library not found for -lcrt0.o
clang: error: linker command failed with exit code 1 (use -v to see invocation)
I've seen staticly linked libc? but I want to get additional information on this topic.
P.S. I am asking this for education purposes rather than for real practice.